Bug 40000 – SAML configuration collides with Nagios

Bug 40000 - SAML configuration collides with Nagios


Summary:	SAML configuration collides with Nagios

Status:	RESOLVED WONTFIX

Product:	UCS
Classification:	Unclassified
Component:	SAML
Version:	UCS 4.1
Hardware:	Other Linux

Importance:	P5 normal with 2 votes (vote)
Target Milestone:	UCS 4.1-x
Assigned To:	UCS maintainers
QA Contact:

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Duplicates:	41606 (view as bug list)
Depends on:
Blocks:	51202
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Reported:	2015-11-17 13:48 CET by Alexander Kläser
Modified:	2020-05-04 07:40 CEST (History)
CC List:	4 users (show)

See Also:	41606
What kind of report is it?:	Bug Report
What type of bug is this?:	3: Simply Wrong: The implementation doesn't match the docu
Who will be affected by this bug?:	2: Will only affect a few installed domains
How will those affected feel about the bug?:	2: A Pain – users won’t like this once they notice it
User Pain:	0.069
Enterprise Customer affected?:
School Customer affected?:
ISV affected?:
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Bug group (optional):	Workaround is available
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Description Alexander Kläser

2015-11-17 13:48:10 CET

The nagios configuration currently collides with SAML configuration, if the SAML IdP is configured to be the DC master:

/var/log/apache2/error.log
[...]
[2015-11-16 16:26:00]: uid: (114/samlcgi) gid: (121/samlcgi) cmd: php-cgi
[2015-11-16 16:32:13]: uid: (114/samlcgi) gid: (121/samlcgi) cmd: tac.cgi
[2015-11-16 16:32:13]: command not in docroot (/usr/lib/cgi-bin/nagios3/tac.cgi)

/var/log/apache2/suexec.log 
[...]
[2015-11-16 16:32:13]: uid: (114/samlcgi) gid: (121/samlcgi) cmd: tac.cgi
[2015-11-16 16:32:13]: command not in docroot (/usr/lib/cgi-bin/nagios3/tac.cgi)

This is currently a problem on demo.univention.de (cf. Bug 39738)

Comment 1 Sven Anders 2016-03-19 09:16:17 CET

See also:
http://forum.univention.de/viewtopic.php?f=48&t=4897

Comment 2 Alexander Kläser

2016-06-20 11:14:54 CEST

*** Bug 41606 has been marked as a duplicate of this bug. ***

Comment 3 Florian Best

2017-07-26 15:56:43 CEST

Workaround: Install Nagios on a DC Slave.

Comment 4 Sven Anders 2017-07-27 08:51:55 CEST

As far as I can see, the workaround does not work, as univention-saml is also installed on every DC-Salve. The only workaround, I know is to: 

ucr ucs/server/sso/virtualhost=true

Comment 5 Florian Best

2017-07-27 09:43:52 CEST

(In reply to Sven Anders from comment #4)
> As far as I can see, the workaround does not work, as univention-saml is
> also installed on every DC-Salve. The only workaround, I know is to: 
> 
> ucr ucs/server/sso/virtualhost=true

univention-saml should never be installed on a DC Slave.

Comment 6 Florian Best

2017-08-04 12:32:50 CEST

Maybe we should fill an upstream bug report that suexec can be limited to virtual hosts only. Otherwise there is no way to fix this bug. Except if nagios could be moved into a docker container.

Comment 7 Stefan Gohmann

2019-01-03 07:19:32 CET

This issue has been filled against UCS 4.1. The maintenance with bug and security fixes for UCS 4.1 has ended on 5st of April 2018.

Customers still on UCS 4.1 are encouraged to update to UCS 4.3. Please contact
your partner or Univention for any questions.

If this issue still occurs in newer UCS versions, please use "Clone this bug" or simply reopen the issue. In this case please provide detailed information on how this issue is affecting you.